A. oil coking
B. dust accumulation
C. insufficient pressure
D. temperature is too high
Answer: A
Analysis: Coking oil will block the optical path system of the laser welding machine, resulting in a single maintenance cost of more than 500,000 yuan.
A. Nitrogen purge loss B. Brand premium cost C. Advertising intensity D. Equipment appearance aesthetics Answer: A Analysis: High-end industries need to consider nitrogen purging and monitoring sampling losses.
Answer: The compressor uses water instead of oil to lubricate the screw elements, eliminating the risk of oil contamination in the compressed air.
Answer: It offers superior energy efficiency, lower maintenance costs, and a longer lifespan.
Answer: “Low pressure” refers to the compressor’s ability to operate at relatively low pressure levels, making it suitable for applications that require low-pressure compressed air.
A. Theoretical value of exhaust volume B. Actual gas production demand C. Equipment appearance size D. Brand market ranking answer: B Analysis: Selection should take actual gas production demand as the core parameter.